You are kind of mixing things a bit here. It can't be a form submit input and a link at the same time. What are you actually trying to achieve with this code? It looks like a form is not the right element to be using here. Do you want someone to be able to click a button in order to email you? In that case, just style a link to look like a button, if you want a hover effect on the button, or if not, simply put the image into the HTML as I suggested before, and wrap a link around it. It would look something like this:

OK, the first thing you need to consider is your design. You have a big form across the bottom of your page which you don't need. All you need is the link, so you might want to change the design a bit. Anyhow, the link can be something like this: